Flow chart runs only once ?

Newly I realized the flow chart in the state1 is excuted only one time at state entry. Actually I expected the cnt shall be counted up every loop as long as the state1 is active.

How can I fix it so that the flow chart is called every loop?

I found also the following note. It would mean the observed behavior is intended?

If a Stateflow chart contains only a flow chart, the chart evaluates the flow chart each time the chart wakes up. In contrast, the chart evaluates any flow chart inside a state only during state entry.